1 files changed, 25 insertions, 1 deletions

diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c
index ebf6e49ad3d4..1bb95aeea084 100644
--- a/sound/core/rawmidi.c
+++ b/sound/core/rawmidi.c
@@ -379,8 +379,10 @@ static int snd_rawmidi_open(struct inode *inode, struct file *file)
         if (rmidi == NULL)
                 return -ENODEV;
 
-        if (!try_module_get(rmidi->card->module))
+        if (!try_module_get(rmidi->card->module)) {
+                snd_card_unref(rmidi->card);
                 return -ENXIO;
+        }
 
         mutex_lock(&rmidi->open_mutex);
         card = rmidi->card;
@@ -422,6 +424,10 @@ static int snd_rawmidi_open(struct inode *inode, struct file *file)
                 mutex_unlock(&rmidi->open_mutex);
                 schedule();
                 mutex_lock(&rmidi->open_mutex);
+                if (rmidi->card->shutdown) {
+                        err = -ENODEV;
+                        break;
+                }
                 if (signal_pending(current)) {
                         err = -ERESTARTSYS;
                         break;
@@ -440,6 +446,7 @@ static int snd_rawmidi_open(struct inode *inode, struct file *file)
 #endif
         file->private_data = rawmidi_file;
         mutex_unlock(&rmidi->open_mutex);
+        snd_card_unref(rmidi->card);
         return 0;
 
  __error:
@@ -447,6 +454,7 @@ static int snd_rawmidi_open(struct inode *inode, struct file *file)
  __error_card:
         mutex_unlock(&rmidi->open_mutex);
         module_put(rmidi->card->module);
+        snd_card_unref(rmidi->card);
         return err;
 }
 
@@ -991,6 +999,8 @@ static ssize_t snd_rawmidi_read(struct file *file, char __user *buf, size_t coun
                         spin_unlock_irq(&runtime->lock);
                         schedule();
                         remove_wait_queue(&runtime->sleep, &wait);
+                        if (rfile->rmidi->card->shutdown)
+                                return -ENODEV;
                         if (signal_pending(current))
                                 return result > 0 ? result : -ERESTARTSYS;
                         if (!runtime->avail)
@@ -1234,6 +1244,8 @@ static ssize_t snd_rawmidi_write(struct file *file, const char __user *buf,
                         spin_unlock_irq(&runtime->lock);
                         timeout = schedule_timeout(30 * HZ);
                         remove_wait_queue(&runtime->sleep, &wait);
+                        if (rfile->rmidi->card->shutdown)
+                                return -ENODEV;
                         if (signal_pending(current))
                                 return result > 0 ? result : -ERESTARTSYS;
                         if (!runtime->avail && !timeout)
@@ -1609,9 +1621,20 @@ static int snd_rawmidi_dev_register(struct snd_device *device)
 static int snd_rawmidi_dev_disconnect(struct snd_device *device)
 {
         struct snd_rawmidi *rmidi = device->device_data;
+        int dir;
 
         mutex_lock(&register_mutex);
+        mutex_lock(&rmidi->open_mutex);
+        wake_up(&rmidi->open_wait);
         list_del_init(&rmidi->list);
+        for (dir = 0; dir < 2; dir++) {
+                struct snd_rawmidi_substream *s;
+                list_for_each_entry(s, &rmidi->streams[dir].substreams, list) {
+                        if (s->runtime)
+                                wake_up(&s->runtime->sleep);
+                }
+        }
+
 #ifdef CONFIG_SND_OSSEMUL
         if (rmidi->ossreg) {
                 if ((int)rmidi->device == midi_map[rmidi->card->number]) {
@@ -1626,6 +1649,7 @@ static int snd_rawmidi_dev_disconnect(struct snd_device *device)
         }
 #endif /* CONFIG_SND_OSSEMUL */
         snd_unregister_device(SNDRV_DEVICE_TYPE_RAWMIDI, rmidi->card, rmidi->device);
+        mutex_unlock(&rmidi->open_mutex);
         mutex_unlock(&register_mutex);
         return 0;
 }